How can I get the Android read/write permission in QT6

rhaps29

bool checkPermission()
{
    auto r = QtAndroidPrivate::checkPermission(QtAndroidPrivate::Storage).result();
    if (r == QtAndroidPrivate::Denied)
    {
        r = QtAndroidPrivate::requestPermission(QtAndroidPrivate::Storage).result();
        if (r == QtAndroidPrivate::Denied)
            return false;
    }
    return true;
}

This code did not working on Qt6.6.1

Paul Colby

Hi @rhaps29,

This code did not working on Qt6.6.1

It seems that somewhere between Qt 6.2 and 6.4, the those (preliminary) functions were changed to take permission name strings instead of the (now gone) QtAndroidPrivate::Permission enum.

You can see how the QtAndroidPrivate::Storage enum label previoulsy mapped here:

    case QtAndroidPrivate::Storage:
        return {QStringLiteral("android.permission.READ_EXTERNAL_STORAGE"),
                QStringLiteral("android.permission.WRITE_EXTERNAL_STORAGE")};

So try using one, or both, of those, eg:

QtAndroidPrivate::checkPermission(QStringLiteral("android.permission.READ_EXTERNAL_STORAGE")).result();

Cheers.

rhaps29

@Paul-Colby I tried using your source code. but it also did not work

QtAndroidPrivate::checkPermission(QStringLiteral("android.permission.READ_EXTERNAL_STORAGE")).result();

TomZ

@rhaps29 the 'private' permissions code has been replaced with the public QPermission classes that actually have backwards compatibility guarantees like the rest of Qt.

https://doc.qt.io/qt-6.5/permissions.html

You probably will find documentation about what to do with 'storage' permissions.
As far as I know this is only set in the manifest and can't be requested at runtime.